package com.heima.wemedia.service.impl;

import com.alibaba.fastjson.JSONArray;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.heima.apis.article.IArticleClient;
import com.heima.common.aliyun.GreenImageScan;
import com.heima.common.aliyun.GreenTextScan;
import com.heima.common.tess4j.Tess4jClient;
import com.heima.file.service.FileStorageService;
import com.heima.model.article.dtos.ArticleDto;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.pojos.WmChannel;
import com.heima.model.wemedia.pojos.WmNews;
import com.heima.model.wemedia.pojos.WmSensitive;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.utils.common.SensitiveWordUtil;
import com.heima.wemedia.mapper.WmChannelMapper;
import com.heima.wemedia.mapper.WmNewsMapper;
import com.heima.wemedia.mapper.WmSensitiveMapper;
import com.heima.wemedia.mapper.WmUserMapper;
import com.heima.wemedia.service.WmNewsAutoScanService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.util.*;
import java.util.stream.Collectors;
@Service
@Slf4j
@Transactional
public class WmNewsAutoScanServiceImpl implements WmNewsAutoScanService {
    @Autowired
    private WmNewsMapper wmNewsMapper;
    @Autowired
    private IArticleClient articleClient;

    @Autowired
    private WmChannelMapper wmChannelMapper;

    @Autowired
    private WmUserMapper wmUserMapper;
    @Autowired
    private GreenTextScan greenTextScan;
    @Autowired
    private FileStorageService fileStorageService;

    @Autowired
    private GreenImageScan greenImageScan;
    @Autowired
    private WmSensitiveMapper wmSensitiveMapper;
    @Autowired
    private Tess4jClient tess4jClient;
    /**
     * 自媒体文章审核
     *
     * @param id 自媒体文章id
     */
    @Async  //标明当前方法是一个异步方法
    @Override
    public void autoScanWmNews(Integer id) {
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println(id+"--------------------------");
        WmNews wmNews = wmNewsMapper.selectById(id);
        if (wmNews==null){
            throw new RuntimeException("WmNewsAutoScanServiceImpl-文章不存在");
        }
        //如果状态是待审核状态
        if (wmNews.getStatus().equals(WmNews.Status.SUBMIT.getCode())){
            //1.现获取文本和图片
            Map<String , Object> textAndImages=handleTextAndImages(wmNews);
            //2.通过阿里云审核
            //2.1 分析文本
            boolean isTextScan = handleTextScan((String) textAndImages.get("content"),wmNews);
            if(!isTextScan)return;
            //2.2审核图片
            boolean isImageScan =  handleImageScan((List<String>) textAndImages.get("images"),wmNews);
            if(!isImageScan)return;

            //自管理的敏感词过滤
            boolean isSensitive = handleSensitiveScan((String) textAndImages.get("content"), wmNews);
            if(!isSensitive) return;
            //3.审核成功，保存app端的相关的文章数据
            ResponseResult responseResult = saveAppArticle(wmNews);
            if(!responseResult.getCode().equals(200)){
                throw new RuntimeException("WmNewsAutoScanServiceImpl-文章审核，保存app端相关文章数据失败");
            }
            //回填article_id
            wmNews.setArticleId((Long) responseResult.getData());
            updateWmNews(wmNews,(short) 9,"审核成功");
        }
    }
    /**
     * 自管理的敏感词审核
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handleSensitiveScan(String content, WmNews wmNews) {
        boolean flag=true;
        List<WmSensitive> wmSensitives = wmSensitiveMapper.selectList(Wrappers.<WmSensitive>lambdaQuery().select(WmSensitive::getSensitives));
        List<String> stringList = wmSensitives.stream().map(WmSensitive::getSensitives).collect(Collectors.toList());
        //初始化敏感词库
        SensitiveWordUtil.initMap(stringList);

        //查看文章中是否包含敏感词
        Map<String, Integer> map = SensitiveWordUtil.matchWords(content);
        if(map.size() >0){
            updateWmNews(wmNews,(short) 2,"当前文章中存在违规内容"+map);
            flag = false;
        }

        return flag;

    }


    /**
     * 保存APPduan相关数据
     * @param wmNews
     * @return
     */
    private ResponseResult saveAppArticle(WmNews wmNews) {
        ArticleDto dto=new ArticleDto();
        BeanUtils.copyProperties(wmNews,dto);
        dto.setLayout(wmNews.getType());//拷贝ArticleDto的属性 布局
        WmChannel wmChannel=wmChannelMapper.selectById(wmNews.getChannelId());//查询图文id
        if(wmChannel != null){
            //  获取频道名字
            dto.setChannelName(wmChannel.getName());
        }
        //作者
        dto.setAuthorId(wmNews.getUserId().longValue());
        WmUser wmUser = wmUserMapper.selectById(wmNews.getUserId());
        if(wmUser != null){
            //作者名称
            dto.setAuthorName(wmUser.getName());
        }

        //设置文章id
        if(wmNews.getArticleId() != null){
            dto.setId(wmNews.getArticleId());
        }
        dto.setCreatedTime(new Date());

        ResponseResult responseResult = articleClient.saveArticle(dto);
        return responseResult;
    }

    /**
     * 审核图片
     * @param images
     * @param wmNews
     * @return
     */
    private boolean handleImageScan(List<String> images, WmNews wmNews) {
        boolean flag = true;
        if (images==null || images.size()==0){
            return flag;
        }
        images = images.stream().distinct().collect(Collectors.toList());
        List<byte[]> imageList=new ArrayList<>();
        try {
        for (String image : images) {
            byte[] bytes =fileStorageService.downLoadFile(image);
            //从byte[]转换为butteredImage
            ByteArrayInputStream in = new ByteArrayInputStream(bytes);
            BufferedImage imageFile = ImageIO.read(in);

            //识别图片的文字
            String result = tess4jClient.doOCR(imageFile);
            //审核是否包含自管理的敏感词
            boolean isSensitive = handleSensitiveScan(result, wmNews);
            if(!isSensitive){
                return isSensitive;
            }

            imageList.add(bytes);
        }
        }catch (Exception e){
            e.printStackTrace();

        }
        try {
            Map map = greenImageScan.imageScan(imageList);
            if (map!=null){
                if (map.get("suggestion").equals("block")){
                    flag=false;
                    updateWmNews(wmNews,(short)2,"当前文章中存在违规内容");
                }
                //不确定信息  需要人工审核
                if(map.get("suggestion").equals("review")){
                    flag = false;
                    updateWmNews(wmNews, (short) 3, "当前文章中存在不确定内容");
                }
            }
        } catch (Exception e) {
            flag = false;
            e.printStackTrace();
        }
        return flag;
    }

    /**
     * 审核文本
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handleTextScan(String content, WmNews wmNews) {
    //默认通过
        boolean flag=true;
        try {
            //获取标题和 文本
            Map map = greenTextScan.greeTextScan((wmNews.getTitle() + "-" + content));
            if (map!=null){
                if (map.get("suggestion").equals("block")){
                    flag=false;
                    updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容");
                }
                if (map.get("suggestion").equals("review")){
                    flag = false;
                    updateWmNews(wmNews, (short) 3, "当前文章中存在不确定内容");
                }
            }
        } catch (Exception e) {
            flag=false;
            e.printStackTrace();
        }
        return flag;
    }

    /**
     * 修改文章内容
     * @param wmNews
     * @param status 设置状态
     * @param reason 拒绝理由
     */
    private void updateWmNews(WmNews wmNews, short status, String reason) {
        wmNews.setStatus(status);//设置状态
        wmNews.setReason(reason);//拒绝理由
        wmNewsMapper.updateById(wmNews);
    }

    /**
     * 获取文本和图片
     * @param wmNews
     * @return
     */
    private Map<String, Object> handleTextAndImages(WmNews wmNews) {
        //存储纯文本内容
        StringBuilder stringBuilder = new StringBuilder();

        List<String> images = new ArrayList<>();
        if (StringUtils.isNotBlank(wmNews.getContent())){
            List<Map> maps = JSONArray.parseArray(wmNews.getContent(), Map.class);
            //将json 解析成字符串集合  遍历集合 对比类型是文本还是图片
            for (Map map : maps) {
                if (map.get("type").equals("text")){
                    stringBuilder.append(map.get("value"));
                }

                if (map.get("type").equals("image")){
                    images.add((String) map.get("value"));
                }
            }
        }
        if (StringUtils.isNotBlank(wmNews.getImages())){
            //数据库里的图片，切割  成数组
            String[] split = wmNews.getImages().split(",");
            images.addAll(Arrays.asList(split));
        }
        //分别把收取来的图片和文本放到新的集合返回
        Map<String,Object> resultMap=new HashMap<>();
        resultMap.put("content",stringBuilder.toString());
        resultMap.put("images",images);
        return resultMap;

    }
}
